Status indicator and lighting assembly for an appliance door
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Solution Overview
Problem
The existing door assembly designs for appliances face challenges in aligning light sources with status indicators, leading to inconsistent brightness and complexity in wiring, which complicates the assembly process.
Innovation Solution
A door assembly with an alignment feature on the outer door and a biasing assembly within the door gap, including a mounting flange on the inner door and a board assembly with light sources, ensures proper alignment of the light source with the status indicator by using a spring assembly to urge the board assembly against the alignment feature.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If light sources are mounted to light boards directly coupled to the inner door, then wiring complexity is reduced and assembly is simplified, but alignment between light sources and status indicators becomes difficult to achieve
Solution Approach 1:
The door assembly is segmented into inner door and outer door components with independent mounting features. The light board is mounted to the inner door while status indicators are mounted to the outer door, allowing separate positioning and assembly of each component while maintaining alignment through the segmented structure.
Solution Approach 2:
An alignment feature acts as an intermediary element between the light board on the inner door and the status indicators on the outer door. This intermediary feature ensures proper alignment is maintained across the door gap without requiring direct coupling between the light sources and indicators.
2Ease of operation
If status indicators are positioned on the outer door for user visibility, then user information access is improved, but alignment with light sources on the inner door becomes more difficult
Solution Approach 1:
The alignment solution transitions from a two-dimensional planar alignment problem to a three-dimensional spatial relationship. The alignment feature extends into the door gap, creating a vertical dimension for alignment that accommodates the spacing between inner and outer doors while maintaining proper positioning of status indicators for user visibility.
3Productivity
If complete wiring of the light board is performed prior to installation of the outer door, then assembly sequence is simplified, but proper alignment of light sources with status indicators is compromised
Solution Approach 1:
The light board is preliminarily mounted to the inner door with wiring completed in advance, while the outer door with status indicators is separately prepared. The alignment feature is pre-positioned on the outer door to ensure that when the doors are assembled together, proper alignment is automatically achieved without requiring post-assembly adjustments.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution simplifies the assembly process and ensures consistent illumination of status indicators by aligning light sources with status indicators, reducing wiring complexity and improving illumination uniformity.
Implementation Method 1
a biasing assembly operably coupling the board assembly to the mounting flange, the biasing assembly configured for urging the board assembly against the alignment feature to align the light source with the status indicator
Data Source
AI summary
A door assembly for an appliance includes an inner door, an outer door, and a lighting assembly positioned therebetween for illuminating a status indicator mounted on the outer door. The lighting assembly may include a mounting flange and a spring-loaded lighting board that engages an alignment feature mounted on the outer door when the door assembly is assembled, thereby aligning the light sources on the lighting board with the status indicator.